Microsoft is working on it.
If you run Windows 10, you might’ve noticed a drop in game performance recently. And your mouse might even be screwy too. Well, you’re not just imagining it. Apparently a recent Windows 10 update, Version 1809 (KB4482887), has messed up performance for both games and mice. From a Reddit thread on the situation:
This patch is causing massive lag spikes in older games, like CoD4 and CoD MW2.
Right after installing this update, I launch any of the two aforementioned games, moving the mouse around (yes, mouse movement) causes the game to freeze in 1 second intervals every time. If you don’t move the mouse, game appears fine.
Does not affect the modern titles I’ve tested: Battlefield Vrayw_reddit
Repro rate is 100%. I uninstalled KB4482887 and the issue went away. I reinstalled it and the issue came back.
rayw was far from the only user affected, too:
I’ve got this same issue with an RTX2080 and Ryzen 2700X. Destiny 2 has some insane lag spikes when you move the mouse. Also uninstalled this update and all is normal again.
maverick26290
Microsoft is aware of the issue, however. In a recent support document, they note the following:
After installing KB4482887, users may notice graphics and mouse performance degradation with desktop gaming when playing certain games, such as Destiny 2.
Granted, more games than Destiny 2 are affected. That said, Microsoft recommends rolling back the update if you have these performance issues.
In a twist, the update features Spectre mitigations which were actually meant to increase performance. Either way, Microsoft is currently working on a fix. But uninstalling the update will fix problems in the short-term.
Source: PC Gamer
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